I haven't heard of CouchDB in quite some time, great to see it still improving.

I used it years ago when I was experimenting with Ionic[0]. What appealed to me was that I could use CouchDB (cloud) and PouchDB[1] (device) to and have a replicated copy of the data locally. The application was used in areas where network connection was very limited. Using this strategy I was able to ensure the mobile devices data was as recent as the last time it had a network connection.

[0] - https://ionicframework.com/

[1] - https://pouchdb.com/